Compute 2/5 + 3/10.

Compute 2/5 + 3/10.

• A. 1/3
• B. 1/2
• C. 7/10
• D. 1 1/5

Answer: (C)

Adding fractions with different denominators needs a common denominator. Here, convert two fifths to tenths by multiplying top and bottom by 2, giving four tenths. Then add the three tenths: 4/10 + 3/10 = 7/10. So the sum is seven tenths (0.7). That aligns with the result you’re looking for.

Adding fractions with different denominators needs a common denominator. Here, convert two fifths to tenths by multiplying top and bottom by 2, giving four tenths. Then add the three tenths: 4/10 + 3/10 = 7/10. So the sum is seven tenths (0.7). That aligns with the result you’re looking for.